The circumference of the base of a right circular cone is 44cm and its slant height is 10 cm. Its curved surface area is

For a right circular cone,

Circumference of base $=$ 44cm

$2\pi r=44$

$2\times \frac{22}{7}\times r=44$

$r=44\times \frac{7}{44}$

$r=$ 7 cm

Slant height, $l=$ 10cm

C.S.A of cone $=\pi rl$

$=\frac{22}{7}\times 7\times 10$

$=220{\text{ cm}}^2$